Hello all,
I've had a Viessmann vitodens 200 combi condensing boiler for several years now, and up till last week it had been running great without a hitch.
Due to MAJOR rehabilitation work on our apartment building (yes yes, I'm American!) I was asked to move the flue several inches up; they needed to retrofit the walls with woods beams, and the flue was in the way.
I happily obliged, thinking nothing could go wrong if the slope went from 3 degrees to 6 degrees.
On Monday I cut a new hole in the wall, moved the flue up into and through it, and since then there's been a horribly whining whistling noise every time the gas is combusted. (Sorry about my lack of technical words, btw!)
I figure this must be from moving the flue? I've checked the joints on each flue and they're nice and tight. Going out to the outlet of the flue, it's quite clear it only happens when steam is released, but the sound could be either from the intake or the outlet, I can't tell which.
Or could it be from all the dust and whatnot from the renovation of the wall? They've been cutting wood and knocking out cement inches from the flue for several weeks, but this sound definitely only started when I moved the flue...
I've had a Viessmann vitodens 200 combi condensing boiler for several years now, and up till last week it had been running great without a hitch.
Due to MAJOR rehabilitation work on our apartment building (yes yes, I'm American!) I was asked to move the flue several inches up; they needed to retrofit the walls with woods beams, and the flue was in the way.
I happily obliged, thinking nothing could go wrong if the slope went from 3 degrees to 6 degrees.
On Monday I cut a new hole in the wall, moved the flue up into and through it, and since then there's been a horribly whining whistling noise every time the gas is combusted. (Sorry about my lack of technical words, btw!)
I figure this must be from moving the flue? I've checked the joints on each flue and they're nice and tight. Going out to the outlet of the flue, it's quite clear it only happens when steam is released, but the sound could be either from the intake or the outlet, I can't tell which.
Or could it be from all the dust and whatnot from the renovation of the wall? They've been cutting wood and knocking out cement inches from the flue for several weeks, but this sound definitely only started when I moved the flue...